Ok just did the latest Denon 3808 update and reset the processor, Audyysey shows nothing set up.

LFE XO=60(for all tests) 31.5hz tone(for all tests)

Fronts=small, LFE - In stereo mode there was a sub and the crossover is active. In Pure Direct and direct there was no sub.

Fronts=small, LFE+Mains - same as above no sub for PD nor D and sub with crossover for stereo mode

Speakers=large, LFE - Nothing to sub

Speakers=large, LFE+Mains - all modes have sub and no crossover.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70